Which of the following immunoglobulins is present in the highest concentration in normal human serum?
a. IgM
b. IgG
c. IgA
d. IgE
Answer: B
Which of the following immunoglobulins is present in the highest concentration in normal human serum?
a. IgM
b. IgG
c. IgA
d. IgE
Answer: B